• Bristlecone Pine

    Great Basin

    National Park Nevada

There are park alerts in effect.
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  • Wheeler Peak Summit Trail Closed

    A small smoldering fire near the trail has caused the closure of the Wheeler Peak Summit Trail. park staff is observing the fire. Check back here to get an update whne the trail will open. Alpine Lakes Loop and Bristlecone Trail are open. More »

  • Road Work at Great Basin National Park

    Road work will begin in Upper Lehman and Wheeler Peak Campgrounds. Campgrounds will be open but may be noisy and have large vehicles on the roads. The Scenic Drive is open with up to 15 min delays due to road work. Click more for details. Updated 9/9/14 More »

  • Travel Not Recommended - Wheeler Peak Scenic Drive Above 8,000 Feet

    Snow and ice may make travel on Wheeler Peak Scenic Drive unsafe, travel is not recommended at this time. Warmer weather later in the week is expected and conditions may improve. Please check back. 9/29/2014

  • Snake Creek Road and Campsites Closed

    The Snake Creek Road will be closed from the park boundary into the park to begin work on campsites, trails and restroom improvements. Work will continue until snow closes the project. Work will resume in Spring 2015.

What is Climate Change?

The terms global warming and climate change are often used interchangeably, but the two phenomena are different.
Global warming is the rise in global mean temperature due to an increase of heat-trapping greenhouse gases such as carbon dioxide and methane in the atmosphere (see figure below). Based on surface and atmospheric temperatures from thousands of locations, and from satellites worldwide, scientists have determined that the global mean temperature has risen 0.8 degrees C, since 1880.
Climate change is a more general term that refers to changes in many climatic factors (such as temperature and precipitation) from the global to the local scale. These changes are happening in response to global warming and other factors at different rates and in different ways. For example on a large scale, the United States has become wetter over the 20th century, while the Sahel region of central Africa has become drier. In California, global warming and associated climate change is decreasing the Sierra snow pack and melting it sooner, causing water shortages across the state.
Greenhouse effect graphic
Will Elder, NPS


Left - Naturally occurring greenhouse gases—carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)—normally trap some of the sun’s heat, keeping the planet from freezing.

Right - Human activities, such as the burning of fossil fuels, are increasing greenhouse gas levels, leading to an enhanced greenhouse effect. The result is global warming and unprecedented rates of climate change.

 

Did You Know?

Bristlecone Pine; photographed by Kathy Billings

Many of Great Basin National Park's bristlecone pines were growing at the time the Egyptians were building the pyramids. Not only are the trees themselves old, but the needles alone can be 25-40 yrs old!